Comment # 26
on bug 109628
from Mirek Kratochvil
Hello everyone, reporting the same on thinkpad E585; blackscreen issue is triggered by starting X with compositor (lightdm works okay though). Attaching my warning + backtrace + TEST_DEBUG_DATA from debian kernel, just for completeness. (I also tried 5.3 kernel with basically same result) [ 12.766637] [drm] pstate TEST_DEBUG_DATA: 0x37F60000 [ 12.766640] ------------[ cut here ]------------ [ 12.766844] WARNING: CPU: 5 PID: 1474 at drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_hw_sequencer.c:854 dcn10_verify_allow_pstate_change_high+0x30/0x40 [amdgpu] [ 12.766845] Modules linked in: psnap llc overlay snd_hrtimer snd_seq snd_seq_device cpufreq_userspace cpufreq_powersave cpufreq_conservative arc4 uinput edac_mce_amd kvm_amd ccp rng_core kvm irqbypass crct10dif_pclmul crc32_pclmul binfmt_misc ghash_clmulni_intel nls_ascii nls_cp437 vfat fat btusb btrtl btbcm btintel aesni_intel bluetooth efi_pstore aes_x86_64 crypto_simd cryptd glue_helper ath10k_pci ath10k_core uvcvideo videobuf2_vmalloc ath videobuf2_memops joydev drbg videobuf2_v4l2 efivars videobuf2_common serio_raw mac80211 videodev snd_hda_codec_conexant snd_hda_codec_generic snd_hda_codec_hdmi media wmi_bmof ansi_cprng sp5100_tco ecdh_generic snd_hda_intel k10temp ecc crc16 sg snd_hda_codec watchdog cfg80211 snd_hda_core snd_hwdep snd_pcm snd_timer thinkpad_acpi nvram ledtrig_audio snd ucsi_acpi typec_ucsi soundcore typec rfkill battery ac evdev pcc_cpufreq acpi_cpufreq loop parport_pc ppdev lp parport efivarfs ip_tables x_tables autofs4 xfs libcrc32c crc32c_generic sd_mod amdgpu [ 12.766899] gpu_sched i2c_algo_bit ttm ahci libahci drm_kms_helper xhci_pci libata xhci_hcd crc32c_intel psmouse drm sdhci_pci scsi_mod usbcore cqhci sdhci r8169 i2c_piix4 mmc_core nvme usb_common realtek mfd_core libphy nvme_core wmi video i2c_scmi button [ 12.766925] CPU: 5 PID: 1474 Comm: Xorg Not tainted 5.2.0-3-amd64 #1 Debian 5.2.17-1 [ 12.766926] Hardware name: LENOVO 20KV000DMC/20KV000DMC, BIOS R0UET74W (1.54 ) 07/23/2019 [ 12.767051] RIP: 0010:dcn10_verify_allow_pstate_change_high+0x30/0x40 [amdgpu] [ 12.767054] Code: 53 48 8b 87 80 02 00 00 48 89 fb 48 8b b8 b0 01 00 00 e8 63 21 01 00 84 c0 74 03 5b 5d c3 48 c7 c7 38 f8 81 c0 e8 ce 9c 1c d6 <0f> 0b 80 bb 93 01 00 00 00 74 e6 e9 1c 23 06 00 0f 1f 44 00 00 41 [ 12.767056] RSP: 0018:ffffb890425bb7d0 EFLAGS: 00010246 [ 12.767059] RAX: 0000000000000024 RBX: ffff9cd1aee06000 RCX: 0000000000000006 [ 12.767061] RDX: 0000000000000000 RSI: 0000000000000082 RDI: ffff9cd1bef57680 [ 12.767062] RBP: 0000000000000001 R08: 00000000000003e0 R09: 0000000000000004 [ 12.767064] R10: 0000000000000000 R11: 0000000000000001 R12: ffff9cd1b54081b8 [ 12.767065] R13: ffff9cd1b5409bc8 R14: ffff9cd1b54081b8 R15: ffff9cd1afa01000 [ 12.767068] FS: 00007fe2f471cf00(0000) GS:ffff9cd1bef40000(0000) knlGS:0000000000000000 [ 12.767070] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 12.767072] CR2: 00007fe2dc096000 CR3: 0000000430576000 CR4: 00000000003406e0 [ 12.767073] Call Trace: [ 12.767203] dcn10_pipe_control_lock.part.20+0x6a/0x70 [amdgpu] [ 12.767320] dc_stream_set_cursor_attributes+0x11f/0x170 [amdgpu] [ 12.767450] handle_cursor_update.isra.49+0x1b2/0x310 [amdgpu] [ 12.767580] amdgpu_dm_commit_cursors.isra.50+0x5b/0x70 [amdgpu] [ 12.767712] amdgpu_dm_atomic_commit_tail+0x146f/0x1960 [amdgpu] [ 12.767719] ? _cond_resched+0x15/0x30 [ 12.767725] ? kmem_cache_alloc_trace+0x146/0x1c0 [ 12.767736] ? ttm_bo_validate+0x37/0x130 [ttm] [ 12.767838] ? amdgpu_bo_pin_restricted+0x23d/0x270 [amdgpu] [ 12.767842] ? _cond_resched+0x15/0x30 [ 12.767847] ? wait_for_completion_timeout+0x3b/0x1a0 [ 12.767851] ? refcount_inc_checked+0x5/0x30 [ 12.767947] ? amdgpu_bo_ref+0x17/0x20 [amdgpu] [ 12.768075] ? dm_plane_helper_prepare_fb+0x126/0x300 [amdgpu] [ 12.768091] ? commit_tail+0x3d/0x70 [drm_kms_helper] [ 12.768103] commit_tail+0x3d/0x70 [drm_kms_helper] [ 12.768117] drm_atomic_helper_commit+0xb4/0x120 [drm_kms_helper] [ 12.768129] drm_atomic_helper_update_plane+0xf1/0x110 [drm_kms_helper] [ 12.768157] drm_mode_cursor_universal+0x143/0x260 [drm] [ 12.768163] ? __switch_to+0x147/0x3e0 [ 12.768189] drm_mode_cursor_common+0xc9/0x220 [drm] [ 12.768214] ? drm_mode_cursor_ioctl+0x70/0x70 [drm] [ 12.768234] drm_ioctl_kernel+0xac/0xf0 [drm] [ 12.768257] drm_ioctl+0x201/0x3a0 [drm] [ 12.768282] ? drm_mode_cursor_ioctl+0x70/0x70 [drm] [ 12.768369] amdgpu_drm_ioctl+0x49/0x80 [amdgpu] [ 12.768375] do_vfs_ioctl+0xa4/0x630 [ 12.768379] ksys_ioctl+0x60/0x90 [ 12.768383] ? ksys_read+0x99/0xd0 [ 12.768385] __x64_sys_ioctl+0x16/0x20 [ 12.768390] do_syscall_64+0x53/0x130 [ 12.768394] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 12.768398] RIP: 0033:0x7fe2f4c5f5d7 [ 12.768401] Code: 00 00 90 48 8b 05 b9 78 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 89 78 0c 00 f7 d8 64 89 01 48 [ 12.768402] RSP: 002b:00007ffceac65e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 12.768406] RAX: ffffffffffffffda RBX: 0000560127c7ce80 RCX: 00007fe2f4c5f5d7 [ 12.768407] RDX: 00007ffceac65ec0 RSI: 00000000c02464bb RDI: 000000000000000d [ 12.768408] RBP: 00007ffceac65ec0 R08: 0000000000000001 R09: 0000000000003fff [ 12.768410] R10: 000000000000007f R11: 0000000000000246 R12: 00000000c02464bb [ 12.768411] R13: 000000000000000d R14: 0000000000000004 R15: 00005601280f7db0 [ 12.768415] ---[ end trace d4348d0b513dc5d0 ]--- I will try the workaround in the X driver and see. Is there any preliminary guess/chance for an official fix in kernel or in xorg? Thanks, -mk
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